/* TxtCmp - Professional Diff Viewer
 * Full-height layout with IDE-style interface
 * JustFox Brand Colors
 */

/* CSS Variables */
:root {
    /* JustFox Brand Colors */
    --color-fox-orange: #FF6B35;
    --color-deep-blue: #004E89;
    --color-charcoal: #0a0e14;

    /* Background Colors */
    --color-bg-primary: #0a0e14;
    --color-bg-secondary: #1a1f29;
    --color-bg-tertiary: #252a35;
    --color-bg-hover: #2d3748;

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0aec0;
    --color-text-muted: #6b7280;

    /* Border Colors */
    --color-border: #2d3748;
    --color-border-light: #3d4758;

    /* Diff Colors */
    --color-diff-added: #22863a;
    --color-diff-added-bg: #1a3d2a;
    --color-diff-added-gutter: #0d2818;
    --color-diff-removed: #cb2431;
    --color-diff-removed-bg: #3d1a1f;
    --color-diff-removed-gutter: #2d1418;
    --color-diff-changed: #f9826c;
    --color-diff-changed-bg: #3d2d1a;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", sans-serif;
    --font-family-mono: "SF Mono", "Monaco", "Consolas", "Courier New", monospace;

    /* Header height */
    --header-height: 60px;
    --footer-height: 40px;
    --stats-bar-height: 50px;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    height: 100%;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Links */
a {
    color: var(--color-fox-orange);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #ff8556;
    text-decoration: underline;
}

/* Header */
.header {
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.header-content {
    width: 100%;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo img {
    border-radius: 6px;
    background-color: var(--color-bg-primary);
    padding: 2px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-fox-orange), #ff8556);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

/* Recent Dropdown */
.recent-dropdown-container {
    position: relative;
    margin-left: 1.5rem;
}

/* Language Picker */
.language-picker-container {
    position: relative;
    margin-left: 0.75rem;
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    min-width: 250px;
    z-index: 1000;
}

.language-dropdown.hidden {
    display: none;
}

.language-dropdown-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.language-list {
    max-height: 400px;
    overflow-y: auto;
}

.language-item {
    padding: 0.625rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
}

.language-item:last-child {
    border-bottom: none;
}

.language-item:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.language-item.active {
    background-color: rgba(255, 107, 53, 0.1);
    color: var(--color-text-primary);
}

.language-item.active i:first-child {
    color: var(--color-fox-orange);
}

.language-item i:first-child {
    width: 1.25rem;
    text-align: center;
    font-size: 1rem;
}

.language-item span {
    flex: 1;
}

.language-check {
    color: var(--color-fox-orange);
    font-size: 0.875rem;
}

.recent-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    min-width: 350px;
    max-width: 450px;
    z-index: 1000;
}

.recent-dropdown.hidden {
    display: none;
}

.recent-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.recent-list {
    max-height: 400px;
    overflow-y: auto;
}

.recent-empty {
    padding: 2rem 1rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.recent-item {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.recent-item:last-child {
    border-bottom: none;
}

.recent-item:hover {
    background-color: var(--color-bg-hover);
}

.recent-item-names {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.recent-item-names i {
    color: var(--color-fox-orange);
    font-size: 0.75rem;
}

.recent-item-meta {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.recent-footer {
    padding: 0.5rem 1rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.btn-text {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    padding: 0.375rem 0.75rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.btn-text:hover {
    color: var(--color-fox-orange);
    background-color: rgba(255, 107, 53, 0.1);
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border: 2px solid transparent;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.btn-primary {
    background-color: var(--color-fox-orange);
    color: var(--color-text-primary);
    border-color: var(--color-fox-orange);
}

.btn-primary:hover:not(:disabled) {
    background-color: #ff8556;
    border-color: #ff8556;
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-bg-hover);
    border-color: var(--color-border-light);
    color: var(--color-text-primary);
}

/* Main Viewer */
.main-viewer {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

/* Diff Toolbar */
.diff-toolbar {
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    gap: 1rem;
}

.diff-toolbar.hidden {
    display: none;
}

.toolbar-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toolbar-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background-color: var(--color-border);
}

.btn-group {
    display: flex;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.btn-toggle {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    background-color: transparent;
    color: var(--color-text-secondary);
    border: none;
    border-right: 1px solid var(--color-border);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.btn-toggle:last-child {
    border-right: none;
}

.btn-toggle:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.btn-toggle.active {
    background-color: var(--color-fox-orange);
    color: var(--color-text-primary);
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    background-color: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

.btn-icon:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
    border-color: var(--color-border-light);
}

.btn-icon.active {
    background-color: var(--color-fox-orange);
    color: var(--color-text-primary);
    border-color: var(--color-fox-orange);
}

.btn-icon:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background-color: var(--color-bg-secondary);
    border-radius: 12px;
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    overflow: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

/* Upload Grid */
.upload-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.upload-box {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.upload-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.file-drop-zone {
    background-color: var(--color-bg-tertiary);
    border: 2px dashed var(--color-border);
    border-radius: 8px;
    padding: 2rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-drop-zone:hover {
    border-color: var(--color-fox-orange);
    background-color: rgba(255, 107, 53, 0.05);
}

.file-drop-zone.drag-over {
    border-color: var(--color-fox-orange);
    background-color: rgba(255, 107, 53, 0.1);
}

.drop-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.drop-icon {
    font-size: 3rem;
    color: var(--color-text-muted);
}

.drop-text {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.file-name {
    color: var(--color-fox-orange);
    font-size: 0.875rem;
    font-weight: 600;
    display: none;
}

.file-drop-zone.has-file .drop-icon,
.file-drop-zone.has-file .drop-text {
    display: none;
}

.file-drop-zone.has-file .file-name {
    display: block;
}

/* Options Section */
.options-section {
    background-color: var(--color-bg-tertiary);
    border-radius: 8px;
    padding: 1rem;
}

.options-section h3 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-text-secondary);
}

.options-grid {
    display: flex;
    gap: 1.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.checkbox-label input[type="checkbox"] {
    width: 1.125rem;
    height: 1.125rem;
    cursor: pointer;
    accent-color: var(--color-fox-orange);
}

.checkbox-label:hover {
    color: var(--color-text-primary);
}

/* Paste Grid */
.paste-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.paste-box {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.paste-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.paste-textarea {
    background-color: var(--color-bg-tertiary);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    padding: 1rem;
    color: var(--color-text-primary);
    font-family: var(--font-family-mono);
    font-size: 13px;
    line-height: 1.6;
    min-height: 300px;
    resize: vertical;
    transition: all 0.2s ease;
}

.paste-textarea:focus {
    outline: none;
    border-color: var(--color-fox-orange);
    background-color: rgba(255, 107, 53, 0.05);
}

.paste-textarea::placeholder {
    color: var(--color-text-muted);
}

/* Empty State */
.empty-state {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
}

.empty-state.hidden {
    display: none;
}

.empty-content {
    text-align: center;
    max-width: 500px;
}

.empty-icon {
    font-size: 5rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.empty-content h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.empty-content p {
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.empty-features {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.feature-item i {
    color: var(--color-fox-orange);
    font-size: 1rem;
}

/* Diff Container */
.diff-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Split View */
.split-view {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
}

.split-view.hidden {
    display: none;
}

.view-pane {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-right: 1px solid var(--color-border);
}

.view-pane:last-child {
    border-right: none;
}

.pane-header {
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.pane-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.pane-stats {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.file-info-item {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    white-space: nowrap;
}

.file-info-item i {
    font-size: 0.7rem;
    color: var(--color-fox-orange);
    opacity: 0.7;
}

.file-info-separator {
    color: var(--color-border);
    font-weight: 300;
}

.pane-content {
    flex: 1;
    overflow: auto;
    background-color: var(--color-bg-primary);
}

/* Unified View */
.unified-view {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.unified-view.hidden {
    display: none;
}

.unified-header {
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 1rem;
    flex-shrink: 0;
}

.file-comparison {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
}

.file-label {
    font-weight: 600;
    color: var(--color-text-primary);
}

.file-comparison i {
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.unified-content {
    flex: 1;
    overflow: auto;
    background-color: var(--color-bg-primary);
}

/* Code Editor */
.code-editor {
    font-family: var(--font-family-mono);
    font-size: 13px;
    line-height: 1.6;
    white-space: pre;
    overflow: auto;
    min-height: 100%;
}

.code-line {
    display: flex;
    min-height: 21px;
    position: relative; /* For absolute positioning of merge buttons */
}

.line-number {
    flex-shrink: 0;
    width: 60px;
    padding: 0 0.75rem;
    text-align: right;
    color: var(--color-text-muted);
    background-color: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    user-select: none;
}

.line-content {
    flex: 1;
    padding: 0 1rem;
    overflow-x: auto;
}

/* Line wrapping */
.code-editor.wrap-lines .line-content {
    white-space: pre-wrap;
    word-break: break-all;
    overflow-x: hidden;
}

/* Collapsed sections */
.code-section-collapsed {
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    margin: 0.5rem 0;
    cursor: pointer;
    transition: all 0.2s ease;
}

.code-section-collapsed:hover {
    background-color: var(--color-bg-hover);
}

.collapse-header {
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.collapse-header i {
    font-size: 0.625rem;
}

.collapse-header:hover {
    color: var(--color-text-secondary);
}

/* Diff Line Styles */
.line-added {
    background-color: var(--color-diff-added-bg);
}

.line-added .line-number {
    background-color: var(--color-diff-added-gutter);
    color: var(--color-diff-added);
}

.line-removed {
    background-color: var(--color-diff-removed-bg);
}

.line-removed .line-number {
    background-color: var(--color-diff-removed-gutter);
    color: var(--color-diff-removed);
}

.line-changed {
    background-color: var(--color-diff-changed-bg);
}

.line-empty .line-number {
    background-color: var(--color-bg-tertiary);
}

/* Highlighted line (from line navigation) */
.line-highlighted {
    background: rgba(255, 107, 53, 0.15) !important;
    border-left: 3px solid var(--color-fox-orange) !important;
    animation: highlightPulse 1s ease;
}

@keyframes highlightPulse {
    0%, 100% { background: rgba(255, 107, 53, 0.15); }
    50% { background: rgba(255, 107, 53, 0.3); }
}

/* Stats Bar */
.stats-bar {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    height: var(--stats-bar-height);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 0 1.5rem;
}

.stats-bar.hidden {
    display: none;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.stat-icon {
    width: 1rem;
    text-align: center;
}

.stat-icon.added {
    color: var(--color-diff-added);
}

.stat-icon.removed {
    color: var(--color-diff-removed);
}

.stat-icon.changed {
    color: var(--color-diff-changed);
}

.stat-icon.unchanged {
    color: var(--color-text-muted);
}

/* AdSense Banner - Responsive Sizes (970x90, 728x90, 320x50) */
.ad-container {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 1rem 1.5rem;
    text-align: center;
    max-width: 100%;
}

/* Desktop: 728x90 */
@media (min-width: 769px) {
    .ad-container {
        min-height: 120px;
    }
}

/* Mobile: 300x250 */
@media (max-width: 768px) {
    .ad-container {
        min-height: 280px;
    }
}

.ad-label {
    font-size: 0.625rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

/* Ad containers */
.ad-mobile { display: none; }
.ad-desktop { display: block; }

@media (max-width: 768px) {
    .ad-desktop { display: none; }
    .ad-mobile {
        display: block;
        min-height: 250px;
    }
}

/* Footer */
.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    height: var(--footer-height);
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.footer-content {
    width: 100%;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.footer-left,
.footer-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-left {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
}

.footer-left p {
    margin: 0;
}

.footer-projects {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

.justfox-icon {
    border-radius: 3px;
    vertical-align: middle;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem 0.375rem;
    background-color: var(--color-bg-tertiary);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.project-link:hover {
    background-color: var(--color-bg-hover);
    text-decoration: none;
}

.project-link img {
    border-radius: 2px;
}

.separator {
    color: var(--color-border);
}

/* Responsive */
@media (max-width: 768px) {
    .upload-grid {
        grid-template-columns: 1fr;
    }

    .split-view {
        grid-template-columns: 1fr;
        overflow-y: auto;
    }

    .view-pane {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .view-pane:last-child {
        border-bottom: none;
    }

    .stats-bar {
        flex-wrap: wrap;
        gap: 1rem;
        height: auto;
        padding: 0.75rem 1rem;
    }

    .header-content {
        padding: 0 1rem;
    }

    .logo h1 {
        font-size: 1.25rem;
    }
}

/* Global Drag & Drop Overlay */
#global-drop-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(10, 14, 20, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

#global-drop-overlay.visible {
    opacity: 1;
    pointer-events: all;
}

.drop-overlay-content {
    text-align: center;
    padding: 3rem;
    border: 3px dashed var(--color-fox-orange);
    border-radius: 16px;
    background-color: rgba(26, 31, 41, 0.8);
    max-width: 600px;
}

.drop-overlay-icon {
    font-size: 5rem;
    color: var(--color-fox-orange);
    margin-bottom: 1.5rem;
    animation: bounce 1s infinite;
}

.drop-overlay-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 2rem;
}

.drop-overlay-hint {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

.drop-zone-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background-color: var(--color-bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.drop-zone-indicator i {
    font-size: 2rem;
    color: var(--color-fox-orange);
}

.drop-zone-indicator span {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* Notification */
.notification {
    position: fixed;
    top: calc(var(--header-height) + 1rem);
    right: 1.5rem;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 10000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
}

.notification.visible {
    opacity: 1;
    transform: translateX(0);
}

.notification-success {
    border-left: 4px solid #22863a;
}

.notification-success i {
    color: #22863a;
}

.notification-error {
    border-left: 4px solid #cb2431;
}

.notification-error i {
    color: #cb2431;
}

.notification span {
    color: var(--color-text-primary);
    font-size: 0.875rem;
}

/* Bounce animation */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Font Size Controls */
.font-size-display {
    min-width: 48px !important;
    font-family: var(--font-family-mono);
    font-weight: 700;
    font-size: 0.75rem;
    cursor: pointer;
}

.font-size-display:hover {
    background-color: var(--color-fox-orange);
    color: var(--color-text-primary);
    border-color: var(--color-fox-orange);
}

.font-size-notification {
    position: fixed;
    top: calc(var(--header-height) + 1rem);
    right: 1.5rem;
    z-index: 10001;
}

.notification-info {
    border-left: 4px solid var(--color-fox-orange);
}

.notification-info i {
    color: var(--color-fox-orange);
}

/* Text selection styling */
::selection {
    background-color: rgba(255, 107, 53, 0.3);
    color: var(--color-text-primary);
}

::-moz-selection {
    background-color: rgba(255, 107, 53, 0.3);
    color: var(--color-text-primary);
}

.line-content::selection {
    background-color: rgba(255, 107, 53, 0.4);
    color: var(--color-text-primary);
}

.line-content::-moz-selection {
    background-color: rgba(255, 107, 53, 0.4);
    color: var(--color-text-primary);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background-color: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
    background-color: var(--color-bg-hover);
    border-radius: 6px;
    border: 2px solid var(--color-bg-primary);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-border-light);
}